Supports both IPv4 and IPv6. - Tools include: Ping, DNS Lookup, Trace Route, Port Scan, Whois, Server Monitor, and Lan Scan. - Support Server List for frequently used servers. - Support Recent Tasks for recent executed tasks. With its simple interfaces, iNetTools provides the easiest way to diagnose your network problems on iPhone and iPad. If you have any questions, please feel free to visit: http://www.comcsoft.com/Portfolio/our_apps/iNetTools/iNetTools_overview.php.